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One-dimensional solar radiative transfer: Perturbation approach and its application to independent-pixel calculations for realistic cloud fields

Jerg, Matthias and Trautmann, Thomas (2007) One-dimensional solar radiative transfer: Perturbation approach and its application to independent-pixel calculations for realistic cloud fields. Journal of Quantitative Spectroscopy and Radiative Transfer, 105 (1), pp. 32-54. Elsevier. DOI: 10.1016/j.jqsrt.2006.09.014.

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Official URL: http://dx.doi.org/10.1016/S0022-4073(07)00109-4

Abstract

The radiative transfer perturbation theory (RTPT), which has already been introduced in atmospheric radiative transfer several years ago, is applied to cloud related problems. The RTPT requires the solution of the radiative transfer equation in the forward and the adjoint mode. The basic principles of this technique are presented as well as its extensions to isotropic surface reflection and its conjunction with the Hermite interpolation. This set of methods is applied to different atmospheric conditions including realistic cloud scenes. The results are compared with the usual (forward) independent pixel calculations with respect to errors of individual pixels and domain-averaged values. The RTPT turns out to be sufficiently accurate in the case the clouds’ internal vertical variations remain moderate. It is also shown that, depending on the specific radiative transfer problem, the RTPT can offer some advantages on computational speed. However, the limitations of the RTPT with regard to realistic clouds are addressed as well.

Document Type:Article
Title:One-dimensional solar radiative transfer: Perturbation approach and its application to independent-pixel calculations for realistic cloud fields
Authors:
AuthorsInstitution or Email of Authors
Jerg, MatthiasInstitute for Meteorology, University of Leipzig
Trautmann, ThomasUNSPECIFIED
Date:2007
Journal or Publication Title:Journal of Quantitative Spectroscopy and Radiative Transfer
Volume:105
DOI:10.1016/j.jqsrt.2006.09.014
Page Range:pp. 32-54
Publisher:Elsevier
Status:Published
Keywords:Radiative transfer; Perturbation theory; Independent-pixel; Clouds; DISORT
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Entwicklung von Atmosphärenprozessoren (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Prof.Dr. Thomas Trautmann
Deposited On:11 Jul 2007
Last Modified:12 Dec 2013 20:24

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